[Powerstroke660]

Ok so I have a 99 1/2 powerstroke and looking at buying a core motor and rebuilding the whole bottemed with the best rods and cam and other stuff for when my motor goes. I found a great deal on a 1997 motor. I do know the HPOPs were slittly different and that the 97 had single shots. Are the bottemends pretty much the same???

Thanks
Tyler

 

[BoredandStroked]

97 bottom end is almost identical. Plus you now have some AA code injectors for mods, and a "wicked wheel" for your 99.5 turbo. The 97 will have a lightened crank (better) and fuel pump lobes on the cam (neither better or worse, just there), and a 15 degree hpop (not as good but can be used for a core for a 17 degree hpop), and no intercooler spider or piping, and incompatible up pipes. That's all I can think of...?

Didn't read your sig first, so some doesn't apply directly to you.

 

[klhansen]

No, the bottom ends were beefed up between 97 and 99 model years.

From what I understand, you can't put a Superduty Crank in a '97 block, or maybe it's vice versa. Either the crank or the block was beefed up, making the swap impossible because of interferences.

I think rods would interchange, and probably cam's as well.

I'm sure someone knows for sure.

 

[BoredandStroked]

No, the bottom ends were beefed up between 97 and 99 model years.

From what I understand, you can't put a Superduty Crank in a '97 block, or maybe it's vice versa. Either the crank or the block was beefed up, making the swap impossible because of interferences.

I think rods would interchange, and probably cam's as well.

I'm sure someone knows for sure.

The crank was DOWN graded and the block requires extra clearance to clear the crank. Not sure of the exact break for this. I know some blocks got the extra clearance and the old style crank just before the change over. I have heard some say the late 99 and up block had some sort of additional change to beef if the block but I don't know about that for sure. I do know that the 97 and later had a thicker valley, don't think it added strength in any meaningfull way though.

 

[jlrsn]

Powerstroke660 (Tyler),

Following is a link to the Ford Training Guide regarding the 1999.5 DIT Engine Update in pdf Format that gives you specific changes made updating the1999 to the1999.5 Engine. This is a fast 2mb download.

http://www.forddoctorsdts.com/publications/coffeetablebooks/19995DITEngineUpdate.pdf


The complete Ford Factory Training Guide in pdf Format for the1994 to 1998 7.3 Direct Injection Turbocharged Diesel is a large 39mb download requiring a broadband connection:

http://www.forddoctorsdts.com/publi...49873DITDirectInjectionTurbochargedDiesel.pdf

and the link to

The complete Ford Factory Training Guide in pdf Format for the 1998 to 1999.5 7.3 Direct Injection Turbocharged Diesel is also a large 39mb download requiring a broadband connection:

http://www.forddoctorsdts.com/publications/coffeetablebooks/9899573DITPowerStrokeDirectInjection.pdf

I have all of these Ford Factory Engine Training Manuals and many more in the original hard copy versions plus the pdf versions.

Thanks to the Keith Browning - Owner and Publisher of the Diesel Technician Society, AKA: the Ford Doctors for the link to the above manuals and many more are at:

Diesel Technician Society

Happy downloading!
Jim

 

[Powerstroke660]

Thanks

Thanks for the info guys these helps alot. Just trying to see if I can build this motor up for my 99 1/2.

Thanks
Tyler